*{
    padding: 0;
    margin: 0;
}
#box{
    width: 1262px;
    height: 3188px;
    background: white;
    margin: auto;
}
header{
    width: 1262px;
    height: 60px;
    border-bottom: 1px solid gainsboro;
}
#top{
    width: 1170px;
    height: 60px;
    margin: auto;
}
#top-left{
    width: 390px;
    height: 60px;
    margin-left: 10px;
    float: left;
}
#top-left>div{
    width: 200px;
    height: 60px;
}
.photo1{
    width: 60px;
    height: 60px;
    overflow: hidden;
    float: left;
}
.photo1 img{
    width: 285px;
    height: 60px;
}
.photo2{
    width: 135px;
    height: 60px;
    overflow: hidden;
    float: left;
}
.photo2 img{
    width: 180px;
    height: 60px;
    margin-left: -55px;
}
#top-right{
    width: 452px;
    height: 40px;
    margin-top: 8px;
    margin-left: 10px;
    float: left;
    background: rgb(243, 247, 249);
    box-shadow: 0px 0px 1px rgb(169, 180, 188);
}
input{
    width: 380px;
    height: 30px;
    color: rgb(169, 180, 188);
    background: rgb(243, 247, 249);
    font-size: 18px;
    margin-top: 2px;
    padding-left: 10px;
    border: hidden;
    float: left;
}
#top-right div{
    width: 60px;
    height: 40px;
    background: rgb(0, 174, 228);
    float: left;
}
#top-right img{
    width: 17px;
    height: 17px;
    padding-top: 12px;
    padding-left: 20px;
}
/* 下拉菜单 */
#navigation{
    width: 1262px;
    height: 53px;
    border-bottom: 1px solid gainsboro;
    background: white;
    position: relative;
    position: sticky;
    top: 0px;
}
nav{
    width: 1262px;
    height: 53px;
    background: white;
    margin: auto;
    display: flex;
    position: relative;
}
nav a{
    line-height: 53px;
    padding-left: 35px;
    text-decoration: none;
    color: black;
}
.underline1{
    width: 120px;
    height: 2px;
    background: rgb(100, 198, 240);
    position: absolute;
    bottom: 0px;
}
.underline2,.underline3,.underline4,.underline5,.underline6{
    width: 0px;
    height: 2px;
    position: absolute;
    background: rgb(0, 174, 228);
    bottom: 0px;
    left: 20px;
    transition: width 1.5s;
}
nav a:nth-of-type(2):hover .underline2,nav a:nth-of-type(3):hover .underline3,nav a:nth-of-type(4):hover .underline4,nav a:nth-of-type(5):hover .underline5,nav a:nth-of-type(6):hover .underline6{
    width: 115px;
}
nav a{
    position: relative;
}
.pull-down{
    width: 230px;
    height: 80px;
    position: absolute;
    background: white;
    display: grid;
    left: 20px;
    grid-template-rows: repeat(2,40px);
    display: none;
}
.pull-down1{
    width: 230px; 
    height: 160px;
    position: absolute;
    background: white;
    display: grid;
    left: 20px;
    grid-template-rows: repeat(4,40px);
    display: none;
}
.pull-down div:nth-of-type(1),.pull-down div:nth-of-type(2),.pull-down1 div:nth-of-type(1),.pull-down1 div:nth-of-type(2),.pull-down1 div:nth-of-type(3),.pull-down1 div:nth-of-type(4){
    line-height: 40px;
    padding-left: 15px;
}
nav a:nth-of-type(2):hover .pull-down,nav a:nth-of-type(3):hover .pull-down1,nav a:nth-of-type(4):hover .pull-down1,nav a:nth-of-type(5):hover .pull-down,nav a:nth-of-type(6):hover .pull-down{
    display: block;
}
.pull-down div:hover{
    transition: 1s;
    height: 40px;
    background: rgb(0, 174, 228);
}
.pull-down1 div:hover{
    transition: 1s;
    height: 40px;
    background: rgb(0, 174, 228);
}
/* 轮播图 */
#slideshow{
    width: 1262px;
    height: 355px;
    overflow: hidden;
    background: url(./img/photo1.jpg);
    background-size: 100%;
    animation-name: tu;
    animation-iteration-count: infinite;
    animation-duration: 5s;
}
#slideshow:hover{
    animation-play-state: paused;
}
@keyframes tu{
    0%{
        background: url(./img/banner_1.jpg);
        background-size: 100%;
    }
    100%{
        background: url(./img/photo1.jpg);
        background-size: 100%;
    }
}
.slideshow1{
    width: 15px;
    height: 15px;
    background: rgb(172, 175, 178);
    margin-top: 300px;
    margin-left: 670px;
    border-radius: 50%;
    opacity: 0.5;
}
.slideshow2{
    width: 15px;
    height: 15px;
    background: rgb(172, 175, 178);
    margin-top: -15px;
    margin-left: 640px;
    border-radius: 50%;
    opacity: 0.5;
}
.slideshow2:hover{
    background: black;
}
.slideshow1:hover{
    background: black;
}
/* 轮播图下面 */
section{
    width: 1262px;
    height: 380px;
    margin: auto;
}
section p:nth-of-type(1){
    width: 1262px;
    height: 43px;
    margin-top: 75px;
    line-height: 43px;
    text-align: center;
    font-size: 36px;
    font-weight: 300;
}
section p:nth-of-type(2){
    width: 1262px;
    height: 25px;
    margin-top: 20px;
    line-height: 25px;
    text-align: center;
}
#four-advantage{
    width: 1262px;
    height: 197px;
    margin-top: 20px;
    display: grid;
    grid-template-columns:repeat(4,308px);
    gap: 10px;
}
#four-advantage div{
    display: grid;
    justify-items: center;
}
.four-advantage a{
    font-size: 24px;
    font-weight: 300;
    text-decoration: none;
    color: black;
}
.four-advantage a:hover{
    color: rgb(100, 198, 240);
}
/* 产品展示 */
#product-display{
    width: 1262px;
    height: 850px;
    margin-top: -50px;
    background: rgb(242, 242, 242);
}
#product-display p:nth-of-type(1){
    width: 1262px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    font-size: 30px;
    font-weight: 700;
    margin-top: 35px;
    padding-top: 65px;
}
#product-display p:nth-of-type(2){
    width: 60px;
    height: 2px;
    background: rgb(100, 198, 240);
    margin: auto;
    margin-top: 15px;
}
#display-top{
    width: 630px;
    height: 22px;
    margin: auto;
    margin-top: 40px;
    display: grid;
    grid-template-columns: repeat(5,110px);
    gap: 20px;
    justify-items: center;
}
#display-top a{
    color: black;
    text-decoration: none;
}
.display-top div{
    height: 2px;
    width: 0px;
    background: rgb(100, 198, 240);
    margin-top: -10px;
    transition: width 0.5s;
}
.display-a:hover .display-top1{
    width: 33px;
}
.display-a:hover .display-top2{
    width: 95px;
}
.display-a:hover .display-top3{
    width: 105px;
}
.display-a:hover .display-top4{
    width: 95px;
}
.display-a:hover .display-top5{
    width: 80px;
}
.display-a:hover{
    animation-name: a;
    animation-duration: 0.1s;
    animation-fill-mode: forwards;
}
@keyframes a{
    from{
        color: black;
    }
    to{
        color: rgb(100, 198, 240);
    }
}
#display-bottom{
    width: 1121px;
    height: 465px;
    display: grid;
    margin: auto;
    margin-top: 50px;
    grid-template-columns: repeat(3,357px);
    gap: 25px;
}
.display-bottom1 div:nth-of-type(1){
    width: 357px;
    height: 357px;
    background: url(./img/chan1.jpg);
    background-size: 100%;
}
.display-bottom1 div:nth-of-type(2),.display-bottom2 div:nth-of-type(2),.display-bottom3 div:nth-of-type(2){
    width: 357px;
    height: 50px;
    line-height: 50px;
    padding-left: 30px;
    margin-top: 20px;
    color: black;
    text-decoration: none;
    font-size: 18px;
    font-weight: 700;
}
#display-bottom a{
    text-decoration: none;
    color: black;
}
.display-bottom1 div:nth-of-type(3),.display-bottom2 div:nth-of-type(3),.display-bottom3 div:nth-of-type(3){
    width: 300px;
    height: 30px;
    padding-left: 30px;
    margin-top: 0px;
    line-height: 30px;
    font-size: 12px;
    font-weight: 600;
}
.display-bottom1 div:nth-of-type(4),.display-bottom2 div:nth-of-type(4),.display-bottom3 div:nth-of-type(4){
    width: 10px;
    height: 85px;
    margin-left: 345px;
    margin-top: -78px;
    background: rgb(0, 174, 228);
}
.display-bottom1 div:nth-of-type(5),.display-bottom2 div:nth-of-type(5),.display-bottom3 div:nth-of-type(5){
    position: absolute;
    margin-top: -85px;
    width: 10px;
    height: 0px;
    background: rgb(0, 174, 228);
    transition: height 0.5s;
}
.display-bottom1:hover .hidden,.display-bottom2:hover .hidden,.display-bottom3:hover .hidden{
    height: 85px;
}
.display-bottom2 div:nth-of-type(1){
    width: 357px;
    height: 357px;
    background: url(./img/chan2.jpg);
    background-size: 100%;
}
.display-bottom3 div:nth-of-type(1){
    width: 357px;
    height: 357px;
    background: url(./img/chan3.jpg);
    background-size: 100%;
}
.display-bottom4{
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    margin-left: 590px;
    margin-top: 20px;
    font-weight: 700;
    background: white;
    border-radius: 50%;
    box-shadow: 2px 2px 8px rgb(169, 180, 188);
}
.display-bottom5{
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    margin-top: 20px;
    margin-left: 110px;
    font-weight: 700;
    background: white;
    border-radius: 50%;
    box-shadow: 2px 2px 8px rgb(169, 180, 188);
}
#display-bottom span{
    color: rgb(0, 174, 228);
}
#display-bottom span:hover{
    color: white;
}
.display-bottom4:hover,.display-bottom5:hover{
    background: rgb(0, 174, 228);
}
/* 关于 */
#about-us{
    width: 1262px;
    height: 530px;
}
#about-us>p:nth-of-type(1){
    width: 1262px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    font-size: 30px;
    font-weight: 500;
    padding-top: 65px;
}
#about-us>p:nth-of-type(2){
    width: 30px;
    height: 2px;
    background: black;
    margin: auto;
    margin-top: 10px;
}
#about-us>p:nth-of-type(3){
    width: 1262px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    font-size: 20px;
    font-weight: 200;
    margin: auto;
    margin-top: 5px;
}
.about-us{
    width: 1170px;
    height: 270px;
    background: rgb(242, 242, 242);
    margin: auto;
}
.about-us1{
    width: 770px;
    height: 270px;
    float: left;
}
.about-us2{
    width: 355px;
    height: 250px;
    margin-top: 10px;
    margin-right: 20px;
    background: url(./img/154.jpg);
    background-size: 100%;
    float: right;
}
.about-us1 p:nth-of-type(1){
    font-weight: bold;
    padding-top: 50px;
    padding-left: 25px;
}
.about-us1 p:nth-of-type(2){
    font-size: 14px;
    padding-top: 15px;
    padding-left: 25px;
    line-height: 2.0;
    word-spacing: 10px;
} 
.about-us1 a{
    display: inline-block;
    width: 120px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    font-size: 18px;
    font-weight: 300;
    margin-left: 30px;
    margin-top: 20px;
    border: 1px solid black;
    color: black;
    text-decoration: none;
    border-radius: 8px;
}
.about-us1 a:hover{
    color: white;
    background: rgb(0, 174, 228);
}
/* 热点新闻 */
#news{
    width: 1262px;
    height: 650px;
    margin: auto;
}
#news>p{
    width: 1262px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    font-size: 30px;
    font-weight: 400;
    padding-top: 100px;
    margin: auto;
}
#news1{
    width: 90px;
    height: 15px;
    border: 1px solid black;
    border-radius: 10px;
    margin-left: 1115px;
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
}
#news1 a{
    display: inline-block;
    color: black;
    text-decoration: none;
}
#news1 a:nth-of-type(1){
    width: 45px;
    height: 15px;
    text-align: center;
    line-height: 15px;
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px;
}
#news1 a:nth-of-type(2){
    width: 45px;
    height: 15px;
    border-left: 1px solid black;
    border-top-right-radius: 10px;
    border-bottom-right-radius: 10px;
    text-align: center;
    line-height: 15px;
}
#news1 a:hover{
    color: white;
    background: rgb(100, 198, 240);
}
#news2{
    width: 1150px;
    height: 440px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(4,280px);
    gap: 10px;
    margin-top: 20px;
}
#news2 a{
    text-decoration: none;
    color: black;
}
.news1 a div:nth-of-type(1){
    width: 280px;
    height: 200px;
    background: url(./img/body1.jpg) no-repeat;
    background-size: 100%;
}
.news2 a div:nth-of-type(1){
    width: 280px;
    height: 200px;
    background: url(./img/body2.jpg) no-repeat;
    background-size: 100%;
}.news3 a div:nth-of-type(1){
    width: 280px;
    height: 200px;
    background: url(./img/body3.jpg) no-repeat;
    background-size: 100%;
}.news4 a div:nth-of-type(1){
    width: 280px;
    height: 200px;
    background: url(./img/body4.jpg) no-repeat;
    background-size: 100%;
}
.news1 a div:nth-of-type(2),.news2 a div:nth-of-type(2),.news3 a div:nth-of-type(2),.news4 a div:nth-of-type(2){
    width: 220px;
    height: 200px;
    margin-top: 20px;
    margin-left: 30px;
}
#news2 span img{
    width: 15px;
    height: 15px;
}
.news1 p:nth-of-type(1),.news2 p:nth-of-type(1),.news3 p:nth-of-type(1),.news4 p:nth-of-type(1){
    padding-top: 10px;
    line-height: 1.5;
}
.news1 p:nth-of-type(2),.news2 p:nth-of-type(2),.news3 p:nth-of-type(2),.news4 p:nth-of-type(2){
    padding-top: 25px;
    font-size: 12px;
}
.news1 p:nth-of-type(3),.news2 p:nth-of-type(3),.news3 p:nth-of-type(3),.news4 p:nth-of-type(3){
    padding-top: 20px;
}
.news1:hover,.news2:hover,.news3:hover,.news4:hover{
    box-shadow: 4px 4px 15px rgb(172, 175, 178);
    transform: translateY(-10px);
}
/* 下面导航栏 */
#navigations{
    width: 1262px;
    height: 60px;
    background: rgb(0, 174, 228);
    margin: auto;
    margin-top: 50px;
}
.navigations{
    width: 1150px;
    height: 60px;
    line-height: 60px;
    margin: auto;
}
.navigations-left{
    height: 60px;
    width: 770px;
    float: left;
}
.navigations-right{
    height: 45px;
    width: 375px;
    float: left;
    margin-top: 8px;
    border-left: 1px solid white;
}
.navigations-left a{
    text-decoration: none;
    width: 100px;
    color: white;
    display: inline-block;
    padding-left: 30px;
}
.navigations-left a:hover{
    color: black;
}
.navigations-right a{
    width: 45px;
    height: 45px;
    color: white;
    text-decoration: none;
}
.navigations-right a img{
    width: 45px;
    height: 45px;
    padding-left: 10px;
}
/* 底部 */
footer{
    width: 1262px;
    height: 180px;
}
footer p{
    text-align: center;
}
footer p:nth-of-type(1),footer p:nth-of-type(2),footer p:nth-of-type(3){
    padding-top: 15px;
}
footer a{
    text-decoration: none;
    color: rgb(100, 198, 240);
}
